Motor.



1.. A. POYET.

MOTOR.

APPLICATION FILED JUNE 2. I9I3. 1,273,667. Patented July 23,1918.

3 SHEETS-SHEET I.

Fl G-L J. A. PO.YET.

MOTOR.

APPLICATION FILED JUNE 2. m3.

Patented July 23, 1918.

3 SHEETS-SHEET 2- mig ssees; 2m W J. A. POYET.

Patented July 23, 1918.

3 SHEETS-SHEET 3- JEAN ANDRE POYET, or LYON, FRANCE.

MOTOR.

Specification of Letters Patent.

Patented July 23, 1918.

Application filed June 2, 1913. Serial No. 771.259.

To aZ? whom it may concern:

Be it known that I, JEAN ANDRE Form, a citizen of the French Republic, residlng at Lyon, in France, have invented certain new and useful Improvements in Motors, of which the following is a specification.

This invention relates to improvements in motors and comprises a two cycle motor without valves and in which the admission and exhaust ports are unmasked by the movement of the piston in the cylinder, the piston, toward the end of its stroke and in the necessary sequence uncovering openings of large dimensions, one for the exhaust of the burned gases and the other for the inlet of fresh gases.

The essential feature of the invention is that the feed of the cylinder or cylinders is effected by means of a rotary pump having a vane or vanes, without the use of a tank or any intermediate member, or valve.

The mixture from an ordinary carbureter passes into the compression chamber of the cylinder without the production of eddies and wherein it arrives toward the end of the exhaust and without mixing with the exhaust gases. The pump is so arranged that the period at which its rate of delivery is highest, that is to say when the driving vane is sweeping through the widest part of the pump chamber, corresponds precisely with the greatest opening of the inlet port in the cylinder. This condition is important for avoiding eddies while assuring the perfect filling of the cylinder. A single pump suffices to feed a polyoylindrical motor, it being sufiicient to divide it by means of vanes into as many chambers as there are cylinders, the capacity of each of these chambers corresponding to the capacity of the cylinders to be fed, or the same pump vane ma serve for several cylinders, it being su ficient to regulate its speed of rotation and the dimensions of the body of said pump.

Further a pump may be arranged for each cylinder'mountcd on the same or on different shafts.

The annexed drawing illustrates by way of example the application of this invention to a two cylinder motor.

Figure l is a longitudinal section.

Fig. 2 a transverse section.

Fig. 3 is a transverse section of a slightly modified form of execution.

Referring to Figs. 1 to 3, A A denote the cylinders and B B the pistons of which the rods 6 b engage the crank pins 0 c of a crank shaft C. In each of the cylinders the exhaust takes place through a port D and the admission through port E (Fig. 2) both of said ports being of relatively large dimensions. These two ports, are alternately covered and uncovered by the piston which thus automatically operates the distribution.

The inlet ports communicate directly with a rotary pump F comprising sliding vane or vanes G. These vanes are preferably made of vulcanized fiber, ebonitc, or other material requiring little or no lubrication.

The gases sucked in by the pump are conducted along the wall of the cylinder by means of a guide 13 composing the head of the piston.

The runp shown in Fig. 2, having two vanes diametrically opposite each other, and supplying the two cylinders alternately with mixture, revolves at the same speed as the crank shaft. The supply ports of both cylinders open into the Sf" pump chamber, and one of the vanes 2" :U mixture into one cylinder, and H14 other vane forces mixture into the other cylinder. If the pump has only a single vane, as shown in Fig. 3, and is to supply two cylinders, it must rotate at twice the speed of the crank shaft, but if it is to supply only one cylinder its speed is equal to that of the crank shaft.

In the form of construction represented in Fig. 3, the mixture sucked in by the pump F initially circulates in the motor casing between the cylinders, for which purpose it passes from the carburetor into a channel K connected thereto and after being heated, passes into the pump at its upper end, and thence into the cylinders, as indicated by the arrows 1 F ig. 3.

It will be seen that the vane G, rotating in the direction indicated by the arrow 2- in Fig. 3, sweeps upward past the supply port of the motor cylinder, and is thus moving substantially in the direction in which the mixture is to flow in the cylinder.

The delivery of the pump being suitably calculated the fresh gases do not mix with the exhaust gases since they are introduced in a continuous fashion and at a pressure in accordance with that of the explosion gases ren'iaining in the cylinder, and any formation of eddies in the cylinder is consequently prevented.

The ump F is connected to the carbureter by as short a length of piping as names? possible. It can be actuated in any manner forinstanee by means of a vvorm Wheel I (Fig. 1) engaging With a Worm pinion keyed'on a vertical shaft J Which drives the axle of the pump by means of a train of gear wheels. Chain and toothed Wheel gear could alternatively be einployed.

The same pump can distribute the exlosive mixture into two or a greater numer of cylinders.

The invention provides for a constant evacuation of the burned gases by the fresh gases Without the use of valves, conduits and reservoirs. This simplification is so much more important in combustion motors especially those of great power Where the encumbrance and the Wear of these parts present the most serious diliiculties.

The arrangement of admission and exhaust of the gases by means of the piston and through the base of the cylinder is not essential. I

What ll claim as my invention and desire to secure by Letters Patent of thefUnited States is In an internal combustion'motor the combination of a cylinder having an inlet and outlet port, a piston therein adapted to unmask said ports at the required times a pump casing applied directly on the Wall of the cylinder, and connected with the carbureter of the motor; a rotatable member.eccentrically mounted in ,said casing, and a vane adapted to slide in a radial groove in said rotatable member and adapted tofeed the explosive mixture into said cylinder Without com ression and proportionally to the degree 0 opening of said inlet and outlet ports. I

In Witness whereof I have signed this specification in the presence of two Witnesses.

JEAN ANDRE lPlIBYET.

Witnesses:

JUAN GERMAIN, MARrUs NLER AZL 

